The effect of respiratory motion on forward intensity modulated radiotherapy for breast cancer

Taesoo Song, Chang-Ok Suh, Ikjae Lee, Kyoungkeun Jeong, Kichang Keum, Geol Lee Chang, Jinsil Seong, Jaeho Cho

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This study evaluated the effect of respiratory movement on field-in-field (FIF) forward intensity-modulated radiotherapy (IMRT) for the treatment of breast cancer. FIF forward IMRT was performed on ten patients receiving radiotherapy to the whole breast after conservation surgery. Assuming that breast motion follows a sophisticated cyclic function, the changes in hot and cold region, dose homogeneity index (DHI), and skin dose were examined at different respiration amplitudes of 1 cm, 2 cm, and 3 cm. FIF forward IMRT significantly improved the hot region, DHI, and skin dose, but slightly worsened the cold region, compared to the two wedged tangential technique (TWT). Interestingly, we found that the respiration amplitude affected the DHI and cold region but had no effect on the hot region and skin dose. The DHI was slightly improved at 1 cm of amplitude probably due to the blurring effect, remained unchanged at 2 cm of amplitude, and was worsened at 3 cm of amplitude. FIF forward IMRT significantly increased the cold region at 2 cm and 3 cm of respiration amplitude compared to the TWT. At 3 cm of respiration amplitude, an average cold region of 3.27 cm3 was observed. In summary, our data indicate that during FIF forward IMRT, respiration movement has an important effect on various endpoints depending on the respiration amplitude of the patient.

Original languageEnglish
Pages (from-to)207-215
Number of pages9
JournalTechnology in Cancer Research and Treatment
Volume7
Issue number3
DOIs
Publication statusPublished - 2008 Jan 1

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Intensity-Modulated Radiotherapy
Respiration
Breast Neoplasms
Skin
Breast
Radiotherapy

All Science Journal Classification (ASJC) codes

  • Oncology
  • Cancer Research

Cite this

Song, Taesoo ; Suh, Chang-Ok ; Lee, Ikjae ; Jeong, Kyoungkeun ; Keum, Kichang ; Chang, Geol Lee ; Seong, Jinsil ; Cho, Jaeho. / The effect of respiratory motion on forward intensity modulated radiotherapy for breast cancer. In: Technology in Cancer Research and Treatment. 2008 ; Vol. 7, No. 3. pp. 207-215.
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abstract = "This study evaluated the effect of respiratory movement on field-in-field (FIF) forward intensity-modulated radiotherapy (IMRT) for the treatment of breast cancer. FIF forward IMRT was performed on ten patients receiving radiotherapy to the whole breast after conservation surgery. Assuming that breast motion follows a sophisticated cyclic function, the changes in hot and cold region, dose homogeneity index (DHI), and skin dose were examined at different respiration amplitudes of 1 cm, 2 cm, and 3 cm. FIF forward IMRT significantly improved the hot region, DHI, and skin dose, but slightly worsened the cold region, compared to the two wedged tangential technique (TWT). Interestingly, we found that the respiration amplitude affected the DHI and cold region but had no effect on the hot region and skin dose. The DHI was slightly improved at 1 cm of amplitude probably due to the blurring effect, remained unchanged at 2 cm of amplitude, and was worsened at 3 cm of amplitude. FIF forward IMRT significantly increased the cold region at 2 cm and 3 cm of respiration amplitude compared to the TWT. At 3 cm of respiration amplitude, an average cold region of 3.27 cm3 was observed. In summary, our data indicate that during FIF forward IMRT, respiration movement has an important effect on various endpoints depending on the respiration amplitude of the patient.",
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The effect of respiratory motion on forward intensity modulated radiotherapy for breast cancer. / Song, Taesoo; Suh, Chang-Ok; Lee, Ikjae; Jeong, Kyoungkeun; Keum, Kichang; Chang, Geol Lee; Seong, Jinsil; Cho, Jaeho.

In: Technology in Cancer Research and Treatment, Vol. 7, No. 3, 01.01.2008, p. 207-215.

Research output: Contribution to journalArticle

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